DEMOLITION METHOD OF CHIMNEY FOR INCINERATION PLANT

摘要

PROBLEM TO BE SOLVED: To demolish fire bricks of a chimney inner wall having toxic materials stuck thereon without using chemicals or flushing water while ensuring the safety of workers or ambient environments. SOLUTION: An airtight chamber 2 is constituted by use of a sucking blower chamber in the base part of the chimney 1 of an incineration plant, a remote-controlled fire brick automatic removing device 4 is set on the chimney inner part to break the fire bricks 5 having toxic materials stuck thereon, and fallen fire brick pieces or power dust is collected by a remote-controlled shovel car 6 or sucking machine 7, and made to a crushed matter having a constant grain size easy to handle by a grinding machine 8. A duct 9 is set between the airtight chamber 2 and the chimney top opening to constitute a circulating passage of internal air as a closed space never leaking the powder dust or the like to the outside. The work can be performed in a simple method without generating a large quantity of washing drain water, and the safety of workers or ambient environments can be also ensured. This method can be made to a pollution-free demolition method by including a granulation process for granulating the matter to be treated to a granulated material easy to handle and a heat decomposition process for making the granulated material pollution-free. COPYRIGHT: (C)2004,JPO